Porsche DME 7.8 — OBD II Diagnosis Manual / PAGE 775
DME 7.8 DME 7.8 0 · Work instruction
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DME 7.8 DME 7.8 0
Work instruction Display OK If not OK
♦Measure resistance between 0 - 5 Ω
disconnection point Pin 1 and
special tool 9637 Pin I/9
♦Measure resistance between 0 - 5 Ω
disconnection point Pin 2 and
special tool 9637 Pin III/25
♦Measure resistance between 0 - 5 Ω
disconnection point Pin 3 and
special tool 9637 Pin III/10
♦Measure resistance between 0 - 5 Ω
disconnection point Pin 4 and
special tool 9637 Pin I/7
♦Measure resistance between 0 - 5 Ω
disconnection point Pin 5 and
special tool 9637 Pin III/8
♦Switch on the ignition. 0 V.
♦Measure voltage between dis-
connection point Pin 4 and
ground
♦Switch on the ignition. 0 V
♦Measure voltage between dis- Step 5.
connection point Pin 5 and
ground
2442 P1140 0-122.3 page 3
Printed in Germany – 6, 2002 p1140
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